fluid

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fluid,

any substance that is able to flow. Of the four states of matterstates of matter,
forms of matter differing in several properties because of differences in the motions and forces of the molecules (or atoms, ions, or elementary particles) of which they are composed.
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, only a solidsolid,
one of the three commonly recognized states in which matter occurs, i.e., that state, as distinguished from liquid and gas, in which a substance has both a definite shape and a definite volume.
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 is not a fluid, since it has a definite shape that is not readily changed. Any liquidliquid,
one of the three commonly recognized states in which matter occurs, i.e., that state, as distinguished from solid and gas, in which a substance has a definite volume but no definite shape.
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, gasgas,
in physics, one of the three commonly recognized states of matter, the other two being solid and liquid. A substance in the gaseous state has neither definite shape nor definite volume. Like liquids, gases are fluids and assume the shape of their containers.
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, or plasmaplasma,
in physics, fully ionized gas of low density, containing approximately equal numbers of positive and negative ions (see electron and ion). It is electrically conductive and is affected by magnetic fields.
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 is classed as a fluid.

fluid

[′flü·əd]
(physics)
An aggregate of matter in which the molecules are able to flow past each other without limit and without fracture planes forming.

fluid

1. a substance, such as a liquid or gas, that can flow, has no fixed shape, and offers little resistance to an external stress
2. capable of flowing and easily changing shape
References in periodicals archive ?
Engine assembly with fluid lines is a good example of this.
Plastic can be molded in a variety of colors to distinguish between different fluid lines.
Fluid line connectors are available to suit virtually any type of application.
The Wear Chek oil sample valve from Fluid Line Products Inc.
Current exhibitors include Pall Life Sciences, Burket, Everst VIT, Contec, Helix Medical, Powder Systems, Saint-Gobain, Millipore, Westec, Fluid Line, Alleghany Bradford, Nilfisk Advance, RCM Tech, Incite and Active Power.
When paired with proprietary flared tubing assemblies, Torque Right fittings produce a consistent fluid path and internal tubing diameter in any fluid line type.
It also includes a vacuum system on the fluid line for non-drip applications of low viscosity fluids.
Midwife Julie Bates also felt unable to insert a fluid line into Joanne, who suffered massive loss of blood.
Samples are aspirated into an inert fluid line that is heated to temperature and dispensed directly to the reaction vessel to mix with reagents.
In an effort to accommodate the rising pressures commonly seen, Fluid Line Products, the Ohio-based designer and manufacturer of fluid power components including fittings, check and relief valves, manifolds, filter fittings and metric conversion fittings, has developed a new bidirectional in-line filter for mobile hydraulic systems.
Fluid line integration eliminates external hoses for a cleaner design and reduction of potential leak points.